<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <title>CSS实现三栏布局1</title>
    <style type="text/css">
      .left {
        width: 200px;
        height: 300px;
        background-color: #dc698a;
        float: left;
      }
      .middle {
        height: 300px;
        background-color: #8cb08b;
        overflow: hidden;
      }
      .right {
        width: 200px;
        height: 300px;
        background-color: #3eacdd;
        float: right;
      }
    </style>
  </head>
  <body>
    <div class="left">左栏</div>
    <div class="right">右栏</div>
    <div class="middle">中间栏</div>
  </body>
</html>
